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Related Experiment Video

Updated: Feb 27, 2026

A Facile and Eco-friendly Route to Fabricate PolyLactic Acid Scaffolds with Graded Pore Size
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Design and Fabrication of Biomimetic Gradient Bone Tissue Engineering Scaffolds: Evolution from Single-Gradient to

Haitao Liu1, Junjun Liu1, Chenhui Sun1

  • 1Department of Mechanical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China.

Gels (Basel, Switzerland)
|February 26, 2026
PubMed
Summary

Biomimetic gradient scaffolds precisely mimic natural bone's complex structure to improve bone defect repair. This review explores their design, fabrication, and future potential in regenerative medicine.

Keywords:
additive manufacturingbiofabricationbiomimetic designbone tissue engineeringgradient scaffolds

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Tissue Engineering

Background:

  • Bone tissue engineering faces challenges in repairing large defects due to natural bone's complex anisotropy and heterogeneity.
  • Current tissue engineering scaffolds often fail to replicate this intricate natural bone structure, limiting repair efficacy.
  • Biomimetic gradient scaffolds offer a promising approach by mimicking the natural bone microenvironment.

Purpose of the Study:

  • To systematically review recent advancements in gradient scaffolds for bone tissue engineering.
  • To summarize gradient characteristics and design strategies for biomimetic bone scaffolds.
  • To outline future trends and research directions in this field.

Main Methods:

  • Review of gradient characteristics in biomimetic bone scaffolds.
  • In-depth discussion of design strategies, focusing on multi-dimensional gradient construction.
  • Exploration of advanced fabrication techniques, including additive manufacturing.

Main Results:

  • Gradient scaffolds, especially multi-gradient designs, show potential in mimicking natural bone's heterogeneity.
  • Advanced fabrication techniques enable precise control over scaffold structure, composition, and mechanical properties.
  • Biomimetic gradient scaffolds can effectively regulate cellular behavior for enhanced bone regeneration.

Conclusions:

  • Biomimetic gradient scaffolds represent a significant advancement in bone tissue engineering.
  • Further research into multi-dimensional gradient designs and fabrication is crucial for clinical translation.
  • These scaffolds hold promise for overcoming limitations in treating complex bone defects.